Railway vehicle



April 5, 1927. r 1,623,516

. H. zoELLY RAILWAY VEHICLE Filed June 8. 1926 Patented Apr. 5, 1927.

Anire siate-s rra'rnrorrlce- HEINRICH ZOELLY, OF ZURICH, SWITZERLAND.

RAILVAY VEHICLE.

Application filed June 8, y1926, Serial No. 1111.465. and in SwitzerlandJune 17, 1925.

f The invention relates to a railway vehicle with at least two bogiesand 1t has for its yobject to provide a 'ivehicle of thiskind ,whichwill travel smoothly and without shocks. For the attainment oi'thisobject7 Y:mcording to the intention, the frame carrying the'vehiclebody is sprung rrelatively to the bogies and each bogie is furnishedwith not less than three axles. These `axles are so journaled in thebogie that, so 'aryas depressions.inV the permanent way are concerned`they behave like rigidly journaled axles, while, in travelling overbumps on the track they are adapted to yield resiliently in an upwarddirection.

The accompanying drawing illustrates, by way of example, embodiments ot'the invention. v

Fig. 1 shows a passenger coachv with two bogies, each bogie having threeaxles. Fig. 9. shows parts ot' a vehicle with two bogies, each bogiehaving four axles, and

Fig. 3 shows the lower part of a vehicle with three bogies each of whichhas three axles.

Numeral 1 designates a trame serving to carry the coach body 2. Thelrame 1 rests on two bogies 3, each having three axles 4. The upperframe 1 is lsprung.relatively to the bogies 3, by means of springs o.The wheel axles 4 are journaled in bearings each consisting of two parts6, 7. The lower members 7 ol these bearings are carried `in bearerbrackets 8, rigidly fixed to the bogie frames 3. Upon the member (i ofeach bearing there acts aspring 9 the upper end of which bears againstthe bogie trame 3. ln comparison with the coach body and its frame 1,the bogies 3 are relatively light.

ln' travelling over a. depression Jin the track the particular' wheell() which happens to 'be over suoli depression cannot fall into it,since the bogie concerned is still sup- .iorted at five points andbecause, 1nore` over, the bearer 8, which is rigidly fixed to the bogieframe 3, functions, together with the lower-journal bearing member 'T asa fixed stop 'for the axle 4L in question. The other eleven wheels 10are all subjected to an increased load amounting to one-twelfth of thenormal which is substantially taken up by the springs 9, so that thesprings 5 are subjected to practically no cl'iange of load. Thus theelect ot depressions in the track is only to increase slightly theloading of certain ot the springs 9 without substantially ail'ecting thesprings 5; thus when travelling over such depressions the upper frame lremains at rest relatively to the bogies 3. Thus are avoided the shockswhich would inevitably arise when a wheel 10, rhaving above, so that thesprung frame oi ther bogie takes up :i slightly oblique position. Theupper frame l will, however, notsimply assume a position parallel to thebogie in question but will tend, as far as possible to maintain .itsoriginal horizontal position, since.y in 'view ol the heavier massesinvolved, it has more inertia to overcome. Thus the above mentionedwidely differing apportionment ot' masses as between the frame 1 and thebogies operates favourably in maintaining a steady position for theframe' 1. Unly when the reaction on the springs 9 is a. very powerfulone will'a part of this reaction have to be absorbed by the springs 5. Avehicle oll the type described will therefore travel much more smoothlyand with less shocks than those vehicles known hitherto.

The invention mayfalso be applied to yvehicles having more than threeaxles to iach bogie, as .shown in Fig. 2 Where each bogie 3 has fouraxles 4t, or also to vehicles having more than two bogies, as shown inFig. 3, where the vehicle has three bogies 3 each oi which has threeaxles l. Moreover the'innticular construction of the axle bearings 6, 7and their bearers 8, acting as a stop, torms no essential part of theinvention; the only essential being that these members should be soconstructed that the axles iniay, with respect to depressions in thetrack liehave like rigidly journaled axles. whilst in traveling overbumps they may yield resiliently in an upward direction.

l claim:

1. A railway vehicle, comprising in com A :bina'tiong aframe lcarryingthe vehicle body,-

at'-"lea'st two bogries, springs between theA bination, a frame carryingthe vehicle body, atleast two j.`bogies,"springs between the bogies andsaid-frame, at *least three wheel axles for each bogie and means topermit the axles so far as depressions in the permanent Way areconcerned. to beha-ve like rigidly journaled axles, while, inytravellirng over bumps on the permanent way they are adapted-t0 "yield"resiliently in Aan upward direction. y

Arailway vehicle, c'om'prising; in coin'- b'ogies and sa'id'fr'ame,yatleast three ywheel axles for eaf`2h"bogiel and means to Ijournal Itravelsovei bumps in the permanent wayf I and" stop means forpieventing'a downward- "f""`movement of they "Wheel axles when thevehicle travels over depressions in the permanent way.

3. A railway vehicle, comprising in combination, a frame carrying thevehicle body,

at least two, bogjies, springs between the bogies and said traine, atleast three wheel .axles for each bogie, and means to journal permanentway and stop means provided on the pedestals for preventing a downwardmovement of the wheel axles when the vehicle travels over depressions inthe' per- Intestiinony Whereofl have signed my name to thisspeeication.

HEINRICH ZOELLY.

